Method of installing safety boiler plugs



Feb. 27, I923.

v G. A. SAGERQ METHOD OF :INSTALLING SAFETY BOILER PLUGS m Es' lz K FIE: e

v 1 o' all whom it may] concern:

Patented Feb; 27, 1923 unrrsnstares enonen A. SAGER, or ALBANY, new YORK. 1

' METHGDOF INSTALLING sArErY orLnn Pr zes;

. e it known that I GEORGE Seenn,

citizen of the United) States, residing at lilbanygln the county of Albany and State of New York, have invented certain new andwusetul Improvements in llethods of Installing Safety Boiler Plugs, of which the following a specification. I

This .ll'lVGIltlOIl. relates to an lniproved method of installing safetyi boiler plugs, belng a divls on of my pending application forsa fety bdilerf'plug and inetlrod of installing san'ie, filed" August, 19, 1920; Serial NO; 404,659.

In my p'end-ing'application, Idisclose a plug which is" arranged to project through av boiler sheet from the :inner side there of so that the plug cannot blow out, and the present invention co nprehends a novel method of installing and anchoring the plug. H

Other and incidental objects will appear hereinafter. r

In the drawing: V

Figure 1 is a sectional View showing the manner in which the anchoring bolt for the plug is applied.

Figure 2 is a sectional View showing the finished anchoring bolt, and

Figure 8 is a fragmentary front'elevation.

looking at the bolt and plug. .7

Referring now more a particularly to the drawing I have illustrated the backhead of a locomotive boiler at 10 and the back sheet at 11. The usual stud bolts are indicated at 12 and entering through the back sheet is an arch tube 13.. Formed in the backhead opposite the arch tube is an opening 14 provided at its inner end with a beveled seat '15 and formed to removably} fit in said seat is a plug 16 having a beveled face.

. 17 to rest lightly against the seat 15. Rising from the plug at its inner end is a headed stud 18 and anchoring the plug to the backhead is a short length'of chain 19. The lowermost link of this chain is provided with a split loop engaging around the stud 18- to provide a swivel connection between the chain and plug while the uppermost link of the chain is engaged through the eye of an eyefbolt 20. This eye bolt is formed with a longitudinally tapered shank 21 which projects outwardly through areversely tapered opening 22 in the back head 10 snugly;fitting-saidlopening and scour ing the eye bolt to .theback headis aj weld 23"fo'rming a head at. the outer end of the shank coacting 'fwith; the back head. i As particularly shown in Figure 3 of the drawing, the eyeboltis; preferably arranged di- Original a lication filed August 19, 1920, SeriaLNo. 404,359.] Divided and 'thi s applicationifiled neceniber 13,1921. Serial Nd. 522,12e. g 1f rectly above the'plug while the chain 19 is of such length that, when the plug is displaced from the opening 141, iii the back 4,

head, the plug will be supportedat the-jiner side of the backl'1 ead opposite said. openingrso that the plug-may be readily reached.

Normally securing the plug in position clos-' ing the opening-14 1s a clamping bolt24 detachably engaged at itsfinner endwith the plug and surrounding the 'bolt' to. rest 25. Threadeclppon the bolt to coact with to frictionally coact with the nut forlocking the nut against accidental displacement.

against the back head'in a" cupped washer Referring now particularly to Figure 1,

it will be seen that the shank 21 ofthe'eye bolt 20 is originally formed with a threaded portion 27 provided near its outer end with an opening 28 and connected with the ta 7 pere-d inner end portion'of the shank'by a 3 A collar or spacer is provided as is also a washer 31 adapted to restagainstthecollar, while a nut 32- is,

reduced neck 29.

threaded upon the outer end portion of the shank to co a-ct with the xva-sher'; I J

In installing the device; the eye bolt hav-- ing thechain and plug attached theretois lowered within the water space of the boiler at the rear of the back head until the eye bolt appears at the opening 14. Aworkrnau 7 then seizes the eye boltwhen; alength of wire is engaged through the opening 28 thereof and the tree endof the wire directed outwardl throu'h the e e bolt 0 en I V 52 J, P

shank beingpreierably' provided atitsouter end withan arrow'or other mark denoting ing in the back head. By then pulling upon p ice" the disposition of the eye/at the inner end J of the bolt so that'the boltmay be rotated and the eye readilydisposedvertically. The spacer 30 is then arranged about the shank of the eye bolt and the washer positioned against said spacerwhen the nut 32 is .ap

plied to the threaded portion .27 of said shank enduadjust ed inwardly thereon for "forcibly drawing the tapered portion of the eye bolt shank outwardly through the open ing in binding engagement withthe wall;

weld 23 is formed; This done, thethreaded portion 31 of the shank of the eye bolt is broken off atthe neck 29. Theeye bolt will then support the plug suspended opposite the, opening lt through the back head so that the claniping bolt 24 maybe readily engeged with the plug :tor securing the plug Y Having thus described the invention, what is elaiined as new is: j, I I l L The method of installing a plug upon hbioiler sheet whioh consists in fitting an attaohed anc-llorin boltfor the plug through he h t f mth nn Sid th reof, d ewthe bolt outwardly into wedlging engagement. with the sheet and securing the bolt ag'aii-istinwar d retr'aetion through the sheet.

2. The m thod ofinsttlnng e plug' pon a boilersheet whioh consists in .titting afn tta hed ll fi i -b lt, Or-.j. l Pl through a tape I 1 opening in tbe s hejelt from the inner side'oii s aid, sheet, drawing the bolt outwardly into wedgingengageinent side of the sheet, andbrea-king off theouter' end portion of the bolt near the head formed 4. The method of installing plug upon ,a,

boiler sheet which Consists in forming opening through the sheet, fitting-an attao'hed anchorlng bolt for the plugthrough said opening fronrthe inner side ot the sheet, disposing a s aoer about the oute'r end piort ionof the bolt arranging a washerupon the bolt to coact with said spa 'oer ladju sting a nut upon th'eouter end portion of the bolt to coaet with said washer for forcibly r w g? ibolt th OughJs id ,Qp' ni g,

welding head upont11e1bo1t at the outer side of the sheet, and breaking the outerend portion of the bolt ofl' near the head welded thereon V In testimony whereof fatlfiXi-hiy signature.

GEORGE A. smile, t; s1. 

